---
product_id: 569784528
title: "GSM Master Card Sim Based Device | Dual Way Talking ID Card with Earpeice | Two Way Communication with 3 Hours Battery Backup"
brand: "fredi hd plus"
price: "1224 kr"
currency: DKK
in_stock: true
category: "Fredi Hd Plus"
url: https://www.desertcart.dk/products/569784528-gsm-master-card-sim-based-device-dual-way-talking-id
store_origin: DK
region: Denmark
---

# Inductive coil powers discreet earpiece Dual-band GSM for global reach 3-hour continuous talk time GSM Master Card Sim Based Device | Dual Way Talking ID Card with Earpeice | Two Way Communication with 3 Hours Battery Backup

**Brand:** fredi hd plus
**Price:** 1224 kr
**Availability:** ✅ In Stock

## Summary

> 🎙️ Stay in the know, stay ahead—covert communication redefined.

## Quick Answers

- **What is this?** GSM Master Card Sim Based Device | Dual Way Talking ID Card with Earpeice | Two Way Communication with 3 Hours Battery Backup by fredi hd plus
- **How much does it cost?** 1224 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/569784528-gsm-master-card-sim-based-device-dual-way-talking-id)

## Best For

- fredi hd plus enthusiasts

## Why This Product

- Trusted fredi hd plus brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Extended Battery Life:** Up to 3 hours of uninterrupted communication to keep you in control.
- • **Powerful Inductive Coil:** Ensures crystal-clear audio through a mini earpiece for discreet conversations.
- • **Plug & Play Sim-Based Setup:** Insert any SIM and start covert calls instantly—no complicated setup needed.
- • **Ultra-Compact & Lightweight:** Master Card sized (8.4x5.4x0.5 cm) and just 30g for ultimate portability.
- • **Seamless Covert Communication:** Two-way mobile network calls keep you connected without detection.

## Overview

The FREDI HD PLUS GSM Master Card is a sleek, SIM-based covert communication device designed for professionals needing discreet two-way talk capabilities. Featuring dual-band GSM compatibility (800-1800 MHz), a powerful inductive coil for a mini earpiece, and a rechargeable 650mAh battery offering up to 3 hours of talk time, it fits conveniently in your pocket at just 30 grams. Ideal for security personnel, presenters, and executives, it enables real-time, undetectable communication anywhere with mobile network coverage.

## Description

Conversation with any person without being noticed by anyone. This device helps you anywhere whenever you are in trouble. The ID card can be successfully used in meetings, conferences, for . ID Card is offering the Bluetooth earpiece devices that has best Uses: Secret message can be communicated. Necessary information can be transferred in Real Time. You can disclose somebody’s secrets. Use in sting operations Use for Covert Communication .Use by Detectives to solve case. Use in the meetings and conferences;Use for playing games with your friends ;Use for enjoyment and fun. Working frequency: 800-1800mhz Type: Range of the earpiece: 50-70cm Distance of the mobile-unlimited distance Size: 85*50*4.5 mm 2-3 hours talking time Microphone: 35dB Rechargeable battery:650mAh How to operate: The has a built in dual band module that works in both of Four Band mobile phone networks. It provides two-way covert communications via mobile phone networks. Once inserted a SIM card and turning on the power, it will automatically pick-up calls from any mobile phone

## Features

- Two way covert communication via mobile phone networks.
- Optimized inductive coil creates strong power for earpiece.
- If you are a host of the show you are in the center of everybody's attention. You can make no mistakes, the mini earpiece and your team will help you out.
- If you are a politician you look confident in front of your audience as you don't have to sight-read your speech anymore. Your assistant will make sure you remember all your arguments.
- Note:- (BUYER WILL BE RESPONSIBLE FOR ANY ILLEGAL USE OF ANY GADGETS, MISUSING THESE DEVICE IS PUNISHABLE OFFENCE). Useful to communication for security -law enforcement -detectives-news readers.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CKHKR3TN |
| Batteries | 1 Lithium Polymer batteries required. (included) |
| Batteries Included | Yes |
| Batteries Required | Yes |
| Battery cell composition | Lithium Polymer |
| Best Sellers Rank | #128,389 in Electronics ( See Top 100 in Electronics ) #4,242 in Office Electronics #4,621 in Portable Media Players |
| Brand | FREDI HD PLUS |
| Cellular technology | LTE |
| Connector Type | Wireless |
| Country of Origin | Hong Kong |
| Date First Available | 4 October 2023 |
| Generic Name | Spy Master Card |
| Importer | FREDI HD PLUS -- 9810589579, 9773661598 (what's app) - Monday to Saturday - 10:00 AM to 6:30 PM ------(Sunday - close) |
| Includes Rechargeable Battery | Yes |
| Item Dimensions LxWxH | 8.4 x 5.4 x 0.5 Centimeters |
| Item Weight | 30 g |
| Item model number | Master Card |
| Manufacturer | FREDI HD PLUS |
| Model | Master Card |
| Mounting Hardware | 1*Master Card, 1*Charging Cable ,2*Cell, 1*Earpiece, 1*Manual |
| Net Quantity | 1.00 Count |
| Number of items | 1 |
| Packer | FREDI HD PLUS -- 9810589579, 9773661598 (what's app) - Monday to Saturday - 10:00 AM to 6:30 PM ------(Sunday - close) |
| Product Dimensions | 8.4 x 5.4 x 0.5 cm; 30 g |
| Special Features | HD Resolution |

## Product Details

- **Brand:** FREDI HD PLUS
- **Cellular Technology:** LTE
- **Number of Items:** 1
- **Service Provider:** Global

## Images

![GSM Master Card Sim Based Device | Dual Way Talking ID Card with Earpeice | Two Way Communication with 3 Hours Battery Backup - Image 1](https://m.media-amazon.com/images/I/61d9Dq6HAHL.jpg)

## Frequently Bought Together

- FREDI HD PLUS GSM Master Card Sim Based Device | Dual Way Talking ID Card with Earpeice | Two Way Communication with 3 Hours Battery Backup
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**Shop now:** [https://www.desertcart.dk/products/569784528-gsm-master-card-sim-based-device-dual-way-talking-id](https://www.desertcart.dk/products/569784528-gsm-master-card-sim-based-device-dual-way-talking-id)

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-22*